CN108899100B - Sealing structure for maintaining pebble bed high-temperature reactor device - Google Patents
Sealing structure for maintaining pebble bed high-temperature reactor device Download PDFInfo
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- CN108899100B CN108899100B CN201810731858.3A CN201810731858A CN108899100B CN 108899100 B CN108899100 B CN 108899100B CN 201810731858 A CN201810731858 A CN 201810731858A CN 108899100 B CN108899100 B CN 108899100B
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- pressing
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- ring
- temperature reactor
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- 238000007789 sealing Methods 0.000 title claims abstract description 96
- 238000003825 pressing Methods 0.000 claims abstract description 81
- 238000012423 maintenance Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 7
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/028—Seals, e.g. for pressure vessels or containment vessels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Transmission Devices (AREA)
Abstract
The invention relates to the technical field of sealing equipment for maintaining reactor equipment, and discloses a sealing structure for maintaining a pebble-bed high-temperature reactor device, which comprises: a cylinder having an opening formed at an upper end thereof; the sealing end plate is arranged at the opening part of the cylinder body; the pressing sleeve is sleeved on the periphery of the barrel and can slide up and down in a reciprocating manner along the axial direction of the barrel, and an annular groove is formed on the upper surface of the bottom end of the barrel and the lower surface of the bottom end of the pressing sleeve; the sealing component is arranged in the annular groove; and the screwing pressing component is sleeved on the periphery of the cylinder and positioned at the upper part of the pressing sleeve, wherein the screwing pressing component can make the pressing sleeve move downwards along the axial direction of the cylinder and extrude the sealing component to deform so as to seal the annular groove. The sealing structure has the advantage of better realizing the isolation of the internal and external pressure, atmosphere and dust of the pebble bed high-temperature reactor device.
Description
Technical Field
The invention relates to the technical field of sealing equipment for maintaining reactor equipment, in particular to a sealing structure for maintaining a pebble-bed high-temperature reactor device.
Background
The ball bed type high temperature gas cooled reactor uses natural uranium as fuel, graphite as moderator and helium as coolant. The loading and unloading device and the conveying and converting device of the pebble-bed high-temperature gas cooled reactor adopt the magnetic driver to realize power transmission under static helium sealing, when the magnetic driver needs to be maintained or replaced, after the magnetic driver is removed, measures are adopted to isolate the inside of the device from the external atmosphere and prevent internal dust from overflowing, so that the device is convenient to assemble and disassemble, and a special maintenance structure for isolating the inside and the outside of the device can be realized.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a sealing structure for maintaining a pebble-bed high-temperature reactor device, which aims to solve the technical problems that in the prior art, after a magnetic driver is removed, the inside of the device is isolated from the external atmosphere by adopting measures, and internal dust is prevented from overflowing.
(II) technical scheme
In order to solve the above technical problems, the present invention provides a sealing structure for maintenance of a pebble-bed high-temperature reactor apparatus, comprising: a cylinder configured with an opening at an upper end thereof; the sealing end plate is arranged at the opening part of the cylinder body; the pressing sleeve is sleeved on the periphery of the barrel and can slide up and down in a reciprocating manner along the axial direction of the barrel, and an annular groove is formed on the upper surface of the bottom end of the barrel and the lower surface of the bottom end of the pressing sleeve; a sealing member disposed within the ring groove; and the pressing part of screwing, the pressing part cover of screwing is established the periphery of barrel is located press the upper portion of cover, wherein, through screwing press the pressing part of screwing, the pressing part of screwing can impel press the cover to follow the axial downstream and the extrusion of barrel the sealing component takes place deformation with the shutoff the annular.
The bottom end of the cylinder body is provided with an annular sealing groove platform which is connected with the bottom end of the cylinder body and extends towards the outer side.
The annular sealing groove table comprises a first annular body connected with the bottom end of the cylinder and extending towards the outside and a second annular body connected with the first annular body and extending towards the outside, wherein the horizontal plane of the upper surface of the first annular body is higher than the horizontal plane of the upper surface of the second annular body.
Wherein, the bottom end of the pressing sleeve is provided with a convex ring which is sleeved on the periphery of the first ring body.
Wherein an inner diameter of the protruding ring is the same as an outer diameter of the first annular body, and an outer diameter of the protruding ring is the same as an outer diameter of the second annular body.
Wherein the protruding ring comprises a horizontal part and a vertically-extruded part connected with the horizontal part, wherein the lower surface of the vertically-extruded part, the outer side surface of the first ring-shaped body and the upper surface of the second ring-shaped body are jointly configured as the ring groove with an opening facing outwards.
Wherein, the manufacturing material of the sealing component is flexible material.
Wherein, the sealing component comprises one of a sealing strip, a sealing ring and a sealing ring.
The inner ring wall of the pressing sleeve is provided with a sealing ring groove with an opening facing to the direction of the central axis of the pressing sleeve, and a sliding sealing part is embedded in the sealing ring groove.
Wherein the tightening pressing member includes a tightening nut.
(III) advantageous effects
Compared with the prior art, the sealing structure provided by the invention has the following advantages:
when the magnetic driver needs to be maintained or replaced, after the magnetic driver is removed, the sealing structure for maintaining the pebble bed high-temperature reactor device can be inserted into a basal body shaft hole in the pebble bed high-temperature reactor device, the screwing pressing component can gradually move downwards along the axial direction of the cylinder body by screwing the screwing pressing component, namely, moves towards the direction of the pressing sleeve, after the lower end of the screwing pressing component is contacted with the upper end of the pressing sleeve, the screwing pressing component is continuously screwed, the screwing pressing component can apply downward extrusion force to the pressing sleeve along the axial direction, further, the lower end of the pressing sleeve can extrude the sealing component to deform outwards along the radial direction under the action of the extrusion force, so that the sealing component can realize the sealing of the annular groove, further, the plugging of the basal body shaft hole is realized, and the aim of isolating the inside of the pebble bed high-temperature reactor device from the outside atmosphere is fulfilled, meanwhile, the device can also play a role in preventing internal dust from overflowing. In addition, the sealing structure for maintaining the pebble bed high-temperature reactor device also has the advantages of simple structure and convenience in assembly and disassembly.
Drawings
Fig. 1 is a schematic view of the overall structure of a sealing structure for repairing a pebble bed high-temperature reactor apparatus according to an embodiment of the present application.
In the figure, 1: a barrel; 11: an upper surface; 12: an annular seal groove table; 121: a first annular body; 121 a: an upper surface of the first annular body; 121 b: an outer side surface; 122: a second annular body; 122 a: an upper surface of the second ring-shaped body; 2: sealing the end plate; 3: pressing the sleeve; 31: a lower surface; 32: a convex ring; 321: a horizontal portion; 322: a vertical pressing section; 322 a: a lower surface; 33: sealing the ring groove; 4: a ring groove; 5: a sealing member; 6: screwing the pressing component; 7: a sliding seal member; 200: the base body shaft hole.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
as shown in fig. 1, the sealing structure for repairing the pebble bed high temperature reactor device is schematically shown to comprise a cylinder body 1, a sealing end plate 2, a pressing sleeve 3, an annular groove 4, a sealing part 5 and a screwing pressing part 6.
In the embodiment of the application, the lower end of the cylinder 1 is coaxially arranged with a base shaft hole in the pebble bed high-temperature reactor. It will be readily appreciated that the barrel 1 is of hollow cylindrical configuration.
An opening is formed at the upper end of the cylinder 1.
A seal end plate 2 is provided at the opening portion of the cylinder 1. That is, the sealing end plate 2 is provided to mainly seal the opening at the upper end of the cylindrical body 1.
It should be noted that the "upper end" and the "lower end" are both described in terms of the orientation shown in the drawings, and do not represent the orientation in actual mounting, and may be "left end" and "right end" in actual mounting.
In a specific embodiment, the sealing end plate 2 may be integrally formed with the cylinder 1, or may be fixed to the opening portion of the upper end of the cylinder 1 by means of bolts or adhesive. The sealing end plate 2 is not limited as long as it can seal and close the opening at the upper end of the cylinder 1, and the specific fixing method of the sealing end plate 2 is not limited.
The pressing sleeve 3 is sleeved on the periphery of the cylinder 1 and can slide up and down in a reciprocating manner along the axial direction of the cylinder 1, and an annular groove 4 is formed on the upper surface 11 of the bottom end of the cylinder 1 and the lower surface 31 of the bottom end of the pressing sleeve 3.
A sealing member 5 is disposed in the ring groove 4.
The screwing pressing component 6 is sleeved on the periphery of the cylinder 1 and positioned at the upper part of the pressing sleeve 3, wherein by screwing the screwing pressing component 6, the screwing pressing component 6 can cause the pressing sleeve 3 to move downwards along the axial direction of the cylinder 1 and extrude the sealing component 5 to deform so as to seal the annular groove 4. Specifically, when the magnetic driver (not shown) needs to be repaired or replaced, after the magnetic driver is removed, the sealing structure for repairing the pebble-bed high-temperature reactor apparatus of the present application may be inserted into the base shaft hole 200 in the pebble-bed high-temperature reactor apparatus, the screwing and pressing member 6 may be gradually moved downward along the axial direction of the cylinder 1, that is, toward the pressing sleeve 3 by screwing the screwing and pressing member 6, after the lower end of the screwing and pressing member 6 contacts the upper end of the pressing sleeve 3, the screwing and pressing member 6 may be continuously screwed, the screwing and pressing member 6 may apply a downward pressing force to the pressing sleeve 3 in the axial direction, further, the lower end of the pressing sleeve 3 may be deformed radially outward by the pressing member 5 under the pressing force, so that the sealing member 5 may seal the annular groove 4, and further, the plugging of the base body shaft hole 200 is realized, so that the aim of isolating the inside of the pebble-bed high-temperature reactor from the outside atmosphere is fulfilled, and meanwhile, the function of preventing internal dust from overflowing can be achieved. In addition, the sealing structure for maintaining the pebble bed high-temperature reactor device also has the advantages of simple structure and convenience in assembly and disassembly.
When the tightening pressing member 6 is tightened, it is possible to specify "clockwise rotation is tightening", "counterclockwise rotation is loosening", or "counterclockwise rotation is tightening" and "clockwise rotation is loosening".
In one embodiment, in order to ensure the overall structural strength of the sealing structure for repairing the pebble bed high temperature reactor, the cylinder 1, the sealing end plate 2, the pressing sleeve 3 and the tightening and pressing member 6 may be made of stainless steel or carbon steel.
As shown in fig. 1, in order to further optimize the cylinder 1 in the above technical solution, in addition to the above technical solution, an annular sealing groove 12 connected to the bottom end of the cylinder 1 and extending outward is provided at the bottom end of the cylinder 1. It should be noted that the annular sealing groove table 12 can perform an extrusion function on the sealing member 5, so that the sealing member 5 can deform to seal the annular groove 4.
As shown in fig. 1, in order to further optimize the annular sealing groove 12 in the above technical solution, on the basis of the above technical solution, the annular sealing groove 12 includes a first annular body 121 connected to the bottom end of the cylinder 1 and extending outward, and a second annular body 122 connected to the first annular body 121 and extending outward, wherein a horizontal plane of an upper surface 121a of the first annular body 121 is higher than a horizontal plane of an upper surface 122a of the second annular body 122. It will be readily appreciated that the first annular body 121 and the second annular body 122 together form a cross-sectional shape that is similarly "stepped".
In a preferred embodiment, a protruding ring 32 is formed at the bottom end of the pressing sleeve 3, and the protruding ring 32 is sleeved on the periphery of the first ring body 121. That is, the inner surface of the protruding ring 32 is attached to the exposed outer surface of the first ring body 121.
It should be noted that, when the tightening degree of the tightening pressing member 6 reaches the upper limit, the bottom of the protruding ring 32 presses the sealing member 5 to the maximum, and at this time, the deformation amount of the sealing member 5 deforming outward in the radial direction is also the maximum, so that a better sealing of the ring groove 4 can be achieved. Further, the base body shaft hole 200 is plugged.
In a preferred embodiment, the inner diameter of the male ring 32 is the same as the outer diameter of the first ring 121, and the outer diameter of the male ring 32 is the same as the outer diameter of the second ring 122. In this way, by making the inner diameter of the protruding ring 32 the same as the outer diameter of the first annular body 121, the inner contour surface of the protruding ring 32 can be well matched with the outer contour surface of the first annular body 121, and at the same time, by making the outer diameter of the protruding ring 32 the same as the outer diameter of the second annular body 122, the sealing structure for maintaining the pebble-bed high-temperature reactor can be conveniently and smoothly inserted into the base body shaft hole 200 in the pebble-bed high-temperature reactor, and the situation that the sealing structure cannot be smoothly inserted into the base body shaft hole 200 in the pebble-bed high-temperature reactor due to the position interference caused by the inconsistency between the outer diameter of the protruding ring 32 and the outer diameter of the second annular body 122 is avoided.
As shown in fig. 1, in order to further optimize the protruding ring 32 in the above technical solution, on the basis of the above technical solution, the protruding ring 32 includes a horizontal portion 321 and a vertical pressing portion 322 connected to the horizontal portion 321, wherein a lower surface 322a of the vertical pressing portion 322, an outer side surface 121b of the first annular body 121, and an upper surface 122a of the second annular body 122 jointly configure the ring groove 4 with an opening facing outward. It is easy to understand that the annular groove 4 is mainly used for accommodating the sealing member 5, and since the opening of the annular groove 4 faces to the outside, i.e. to the inner hole wall of the base shaft hole 200, when the vertical pressing portion 322 of the protruding ring 32 presses the sealing member 5, the sealing member 5 is deformed radially outward, and the deformed sealing member 5 is in close contact with the inner hole wall of the base shaft hole 200, thereby plugging the base shaft hole 200.
In a preferred embodiment, the sealing member 5 is made of a flexible material. Specifically, the flexible material may be rubber or silicone rubber or the like.
In one embodiment, the sealing member 5 comprises one of a sealing strip, a sealing ring, and a sealing ring. Specifically, when the sealing member 5 is a sealing strip, the sealing strip only needs to be wound around the ring groove 4 for one circle. If the sealing member 5 is a sealing ring or a sealing ring, the sealing ring or the sealing ring is only required to be sleeved on the periphery of the first annular body 121.
Further, the sealing member 5 may be a metal C-ring. The metal C-ring has a C-shaped cross-sectional shape, and when the vertical pressing portion 322 of the collar 32 is pressed against the upper portion of the metal C-ring, the C-shaped cross-sectional shape of the metal C-ring is deformed, that is, the C-shaped cross-sectional shape is deformed in the width direction.
It should be noted that, in order to ensure the positioning firmness of the seal ring or the sealing ring, the inner diameter of the seal ring or the sealing ring may be slightly smaller than the outer diameter of the first annular body 121.
As shown in fig. 1, in the embodiment of the present application, a seal ring groove 33 opening in the direction of the central axis of the press sleeve 3 is formed in the inner annular wall of the press sleeve 3, and a sliding seal member 7 is fitted into the seal ring groove 33. The sliding seal member 7 is configured to be capable of vertically reciprocating along the axial direction of the cylindrical body 1 in association with the press sleeve 3, thereby achieving a sliding seal between the press sleeve 3 and the cylindrical body 1, and thus the installation of the sliding seal member 7 enhances the sealing performance between the press sleeve 3 and the cylindrical body 1, and further, the sealing performance of the sealing structure for maintaining the pebble-bed high-temperature reactor is enhanced on the basis of the seal member 5, thereby preferably achieving isolation of the internal and external pressures, atmosphere and dust of the pebble-bed high-temperature reactor.
In a particular embodiment, the screwing and pressing means 6 comprise screwing nuts. Specifically, a male screw is formed on the inner surface of the fastening nut, and a female screw is formed on the outer surface of the cylindrical body 1, or a female screw is formed on the inner surface of the fastening nut and a male screw is formed on the outer surface of the cylindrical body 1.
As described above, when the magnetic driver needs to be repaired or replaced, the sealing structure for repairing the pebble-bed high-temperature reactor according to the present invention may be inserted into the base body shaft hole 200 of the pebble-bed high-temperature reactor after the magnetic driver is removed, the screwing and pressing member 6 may be gradually moved downward along the axial direction of the cylinder 1, that is, toward the pressing sleeve 3 by screwing the screwing and pressing member 6, after the lower end of the screwing and pressing member 6 is brought into contact with the upper end of the pressing sleeve 3, the screwing and pressing member 6 may be continuously screwed, the pressing force applied to the pressing sleeve 3 in the axial direction by the screwing and pressing member 6 may be further applied to the pressing sleeve 3, and further, the lower end of the pressing sleeve 3 may be deformed outward in the radial direction by the pressing force to press the sealing member 5 to seal the ring groove 4, and further, to block the base body shaft hole 200, thereby reach the inside and the outside atmosphere of ball bed high temperature heap device and keep apart the purpose, simultaneously, can also play the effect that prevents inside dust excessive. In addition, the sealing structure for maintaining the pebble bed high-temperature reactor device also has the advantages of simple structure and convenience in assembly and disassembly.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a ball bed high temperature reactor device seal structure for maintenance which characterized in that includes:
a cylinder configured with an opening at an upper end thereof;
the sealing end plate is arranged at the opening part of the cylinder body;
the pressing sleeve is sleeved on the periphery of the barrel and can slide up and down in a reciprocating manner along the axial direction of the barrel, and an annular groove is formed on the upper surface of the bottom end of the barrel and the lower surface of the bottom end of the pressing sleeve;
a sealing member disposed within the ring groove; and
the screwing pressing component is sleeved on the periphery of the barrel and positioned at the upper part of the pressing sleeve, and the screwing pressing component can drive the pressing sleeve to move downwards along the axial direction of the barrel and extrude the sealing component to deform so as to seal the annular groove;
the bottom end of the cylinder body is provided with an annular sealing groove platform which is connected with the bottom end of the cylinder body and extends towards the outer side;
the annular sealing groove table comprises a first annular body connected with the bottom end of the cylinder and extending towards the outside and a second annular body connected with the first annular body and extending towards the outside, wherein the horizontal plane of the upper surface of the first annular body is higher than the horizontal plane of the upper surface of the second annular body;
a convex ring is formed at the bottom end of the pressing sleeve and sleeved on the periphery of the first annular body;
the convex ring comprises a horizontal part and a vertical pressing part connected with the horizontal part, wherein the lower surface of the vertical pressing part, the outer side surface of the first annular body and the upper surface of the second annular body are jointly formed into the ring groove with an opening facing outwards.
2. The seal structure for pebble bed high temperature reactor installation maintenance according to claim 1, wherein an inner diameter of the convex ring is the same as an outer diameter of the first annular body, and an outer diameter of the convex ring is the same as an outer diameter of the second annular body.
3. The seal structure for pebble bed high temperature reactor equipment maintenance according to any one of claims 1 to 2, wherein a material for manufacturing the seal member is a flexible material.
4. The seal structure for pebble bed high temperature reactor equipment maintenance according to claim 3, wherein the seal member comprises one of a seal strip, a seal ring and a seal ring.
5. A sealing structure for pebble bed high temperature reactor equipment maintenance according to claim 1, wherein a sealing ring groove opened in a central axis direction of the pressure sleeve is formed in an inner annular wall of the pressure sleeve, and a sliding seal member is fitted into the sealing ring groove.
6. The sealing structure for repairing a pebble bed high temperature reactor apparatus according to claim 1, wherein the tightening pressing member comprises a tightening nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810731858.3A CN108899100B (en) | 2018-07-05 | 2018-07-05 | Sealing structure for maintaining pebble bed high-temperature reactor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810731858.3A CN108899100B (en) | 2018-07-05 | 2018-07-05 | Sealing structure for maintaining pebble bed high-temperature reactor device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108899100A CN108899100A (en) | 2018-11-27 |
| CN108899100B true CN108899100B (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810731858.3A Active CN108899100B (en) | 2018-07-05 | 2018-07-05 | Sealing structure for maintaining pebble bed high-temperature reactor device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111883273A (en) * | 2020-07-15 | 2020-11-03 | 中国核动力研究设计院 | Isolation system and process for disassembling and assembling high-temperature gas cooled reactor absorption ball shutdown system |
| CN116787326B (en) * | 2023-08-29 | 2024-04-02 | 江苏海川智能科技有限公司 | Cradle clamp structure for workpiece machining and operation method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3815874A (en) * | 1971-10-18 | 1974-06-11 | Transfer Systems | Bolt tensioning device especially adapted for use with nuclear reactor pressure vessel |
| CN101936392B (en) * | 2010-08-20 | 2012-06-27 | 张家港市广大机械锻造有限公司 | Sealing device for cylinder plunger |
| JP2011069833A (en) * | 2010-11-12 | 2011-04-07 | Hitachi-Ge Nuclear Energy Ltd | Method of connecting neutron measurement pipe, and neutron measurement pipe |
| CN202579288U (en) * | 2012-03-29 | 2012-12-05 | 浙江金盾风机股份有限公司 | Axial labyrinth sealing device for fan |
| CN203517310U (en) * | 2013-09-06 | 2014-04-02 | 航天材料及工艺研究所 | Sealing structure for high-pressure composite cylinder |
| CN103470803B (en) * | 2013-09-23 | 2016-04-20 | 清华大学 | A kind of electric ball valve being applied to high temperature gas cooled reactor |
| CN204213330U (en) * | 2014-10-30 | 2015-03-18 | 中国神华能源股份有限公司 | Coal pulverizer tire plate seal arrangement |
| CN205136589U (en) * | 2015-11-24 | 2016-04-06 | 常德东鼎动力机械有限公司 | Cylinder block leak test sealing device |
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